/*
Panoformer Tool 1.0
Library to convert between different panorama formats


Copyright (c) 2013, Ulf Biallas
All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/



#ifndef PANOFORMER_HH
#define PANOFORMER_HH

#include <iostream>
#include <stdio.h>
#include <math.h>
#include <opencv2/opencv.hpp>



class Panoformer {

	public:
        void equirectangularToCubic(const cv::Mat& imgPanoEquirectangular, std::vector<cv::Mat>& imagesPanoCubic);
        void equirectangularToLittleplanet(const cv::Mat& imgPanoEquirectangular, cv::Mat& imgPanoLittleplanet);
        void cubicToEquirectangular(const std::vector<cv::Mat>& imagesPanoCubic, cv::Mat& imgPanoEquirectangular);
        void cubicToLittleplanet(const std::vector<cv::Mat>& imagesPanoCubic, cv::Mat& imgPanoLittleplanet);
        void littleplanetToEquirectangular(const cv::Mat& imgPanoLittleplanet, cv::Mat& imgPanoEquirectangular);
        void littleplanetToCubic(const cv::Mat& imgPanoLittleplanet, std::vector<cv::Mat>& imagesPanoCubic);

	private:
        cv::Vec3b inline getColorSubpix(const cv::Mat& img, cv::Point2f pt);
        cv::Vec3b inline getPointOfLittleplanetPanorama(const cv::Mat& imgPanoLittleplanet, float& phi, float& theta);
        cv::Vec3b inline getPointOfEquirectangularPanorama(const cv::Mat& imgPanoEquirectangular, float& phi, float& theta);
        cv::Vec3b inline getPointOfCubicPanorama(const std::vector<cv::Mat>& imagesPanoCubic, float& x, float& y, float& z);
        void inline cartesianToEquirectangularalCoords(const float x, const float y, const float z, float& phi, float& theta);
        void inline equirectangularalToCartesianCoords(const float r, const float phi, const float theta, float& x, float& y, float& z);
		int inline getIdxOfLargestComponent(float& x, float& y, float& z);

};

#endif